diff --git a/drivers/gpu/drm/i915/gvt/edid.c b/drivers/gpu/drm/i915/gvt/edid.c
index 4b98539025c5..3ffa814a634e 100644
--- a/drivers/gpu/drm/i915/gvt/edid.c
+++ b/drivers/gpu/drm/i915/gvt/edid.c
@@ -109,9 +109,11 @@ static inline int get_port_from_gmbus0(u32 gmbus0)
 
 static void reset_gmbus_controller(struct intel_vgpu *vgpu)
 {
-	vgpu_vreg_t(vgpu, PCH_GMBUS2) = GMBUS_HW_RDY;
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+
+	vgpu_vreg_t(vgpu, GMBUS2) = GMBUS_HW_RDY;
 	if (!vgpu->display.i2c_edid.edid_available)
-		vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_SATOER;
+		vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_SATOER;
 	vgpu->display.i2c_edid.gmbus.phase = GMBUS_IDLE_PHASE;
 }
 
@@ -141,22 +143,23 @@ static int gmbus0_mmio_write(struct intel_vgpu *vgpu,
 	vgpu->display.i2c_edid.state = I2C_GMBUS;
 	vgpu->display.i2c_edid.gmbus.phase = GMBUS_IDLE_PHASE;
 
-	vgpu_vreg_t(vgpu, PCH_GMBUS2) &= ~GMBUS_ACTIVE;
-	vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_HW_RDY | GMBUS_HW_WAIT_PHASE;
+	vgpu_vreg_t(vgpu, GMBUS2) &= ~GMBUS_ACTIVE;
+	vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_HW_RDY | GMBUS_HW_WAIT_PHASE;
 
 	if (intel_vgpu_has_monitor_on_port(vgpu, port) &&
 			!intel_vgpu_port_is_dp(vgpu, port)) {
 		vgpu->display.i2c_edid.port = port;
 		vgpu->display.i2c_edid.edid_available = true;
-		vgpu_vreg_t(vgpu, PCH_GMBUS2) &= ~GMBUS_SATOER;
+		vgpu_vreg_t(vgpu, GMBUS2) &= ~GMBUS_SATOER;
 	} else
-		vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_SATOER;
+		vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_SATOER;
 	return 0;
 }
 
 static int gmbus1_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 		void *p_data, unsigned int bytes)
 {
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
 	struct intel_vgpu_i2c_edid *i2c_edid = &vgpu->display.i2c_edid;
 	u32 slave_addr;
 	u32 wvalue = *(u32 *)p_data;
@@ -177,8 +180,8 @@ static int gmbus1_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 		 * 2) HW_RDY bit asserted
 		 */
 		if (wvalue & GMBUS_SW_CLR_INT) {
-			vgpu_vreg_t(vgpu, PCH_GMBUS2) &= ~GMBUS_INT;
-			vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_HW_RDY;
+			vgpu_vreg_t(vgpu, GMBUS2) &= ~GMBUS_INT;
+			vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_HW_RDY;
 		}
 
 		/* For virtualization, we suppose that HW is always ready,
@@ -226,7 +229,7 @@ static int gmbus1_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 				 * visible in gmbus interface)
 				 */
 				i2c_edid->gmbus.phase = GMBUS_IDLE_PHASE;
-				vgpu_vreg_t(vgpu, PCH_GMBUS2) &= ~GMBUS_ACTIVE;
+				vgpu_vreg_t(vgpu, GMBUS2) &= ~GMBUS_ACTIVE;
 			}
 			break;
 		case NIDX_NS_W:
@@ -238,7 +241,7 @@ static int gmbus1_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 			 * START (-->INDEX) -->DATA
 			 */
 			i2c_edid->gmbus.phase = GMBUS_DATA_PHASE;
-			vgpu_vreg_t(vgpu, PCH_GMBUS2) |= GMBUS_ACTIVE;
+			vgpu_vreg_t(vgpu, GMBUS2) |= GMBUS_ACTIVE;
 			break;
 		default:
 			gvt_vgpu_err("Unknown/reserved GMBUS cycle detected!\n");
@@ -265,6 +268,7 @@ static int gmbus3_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 static int gmbus3_mmio_read(struct intel_vgpu *vgpu, unsigned int offset,
 		void *p_data, unsigned int bytes)
 {
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
 	int i;
 	unsigned char byte_data;
 	struct intel_vgpu_i2c_edid *i2c_edid = &vgpu->display.i2c_edid;
@@ -274,7 +278,7 @@ static int gmbus3_mmio_read(struct intel_vgpu *vgpu, unsigned int offset,
 	u32 reg_data = 0;
 
 	/* Data can only be recevied if previous settings correct */
-	if (vgpu_vreg_t(vgpu, PCH_GMBUS1) & GMBUS_SLAVE_READ) {
+	if (vgpu_vreg_t(vgpu, GMBUS1) & GMBUS_SLAVE_READ) {
 		if (byte_left <= 0) {
 			memcpy(p_data, &vgpu_vreg(vgpu, offset), bytes);
 			return 0;
@@ -350,12 +354,14 @@ static int gmbus2_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 int intel_gvt_i2c_handle_gmbus_read(struct intel_vgpu *vgpu,
 	unsigned int offset, void *p_data, unsigned int bytes)
 {
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+
 	if (WARN_ON(bytes > 8 && (offset & (bytes - 1))))
 		return -EINVAL;
 
-	if (offset == i915_mmio_reg_offset(PCH_GMBUS2))
+	if (offset == i915_mmio_reg_offset(GMBUS2))
 		return gmbus2_mmio_read(vgpu, offset, p_data, bytes);
-	else if (offset == i915_mmio_reg_offset(PCH_GMBUS3))
+	else if (offset == i915_mmio_reg_offset(GMBUS3))
 		return gmbus3_mmio_read(vgpu, offset, p_data, bytes);
 
 	memcpy(p_data, &vgpu_vreg(vgpu, offset), bytes);
@@ -375,16 +381,18 @@ int intel_gvt_i2c_handle_gmbus_read(struct intel_vgpu *vgpu,
 int intel_gvt_i2c_handle_gmbus_write(struct intel_vgpu *vgpu,
 		unsigned int offset, void *p_data, unsigned int bytes)
 {
+	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+
 	if (WARN_ON(bytes > 8 && (offset & (bytes - 1))))
 		return -EINVAL;
 
-	if (offset == i915_mmio_reg_offset(PCH_GMBUS0))
+	if (offset == i915_mmio_reg_offset(GMBUS0))
 		return gmbus0_mmio_write(vgpu, offset, p_data, bytes);
-	else if (offset == i915_mmio_reg_offset(PCH_GMBUS1))
+	else if (offset == i915_mmio_reg_offset(GMBUS1))
 		return gmbus1_mmio_write(vgpu, offset, p_data, bytes);
-	else if (offset == i915_mmio_reg_offset(PCH_GMBUS2))
+	else if (offset == i915_mmio_reg_offset(GMBUS2))
 		return gmbus2_mmio_write(vgpu, offset, p_data, bytes);
-	else if (offset == i915_mmio_reg_offset(PCH_GMBUS3))
+	else if (offset == i915_mmio_reg_offset(GMBUS3))
 		return gmbus3_mmio_write(vgpu, offset, p_data, bytes);
 
 	memcpy(&vgpu_vreg(vgpu, offset), p_data, bytes);
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index ecff866bbbf1..185e6c3002e5 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -2116,8 +2116,8 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
 
 	MMIO_D(_MMIO(0x48268), D_ALL);
 
-	MMIO_F(PCH_GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
-		gmbus_mmio_write);
+	MMIO_F(GMBUS0, 4 * 4, 0, 0, 0, D_ALL, gmbus_mmio_read,
+	       gmbus_mmio_write);
 	MMIO_F(GPIO(GPIOA), 6 * 4, F_UNALIGN, 0, 0, D_ALL, NULL, NULL);
 	MMIO_F(_MMIO(0xe4f00), 0x28, 0, 0, 0, D_ALL, NULL, NULL);
 
@@ -2507,8 +2507,8 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
 	MMIO_D(_MMIO(0xe6704), D_ALL);
 	MMIO_D(_MMIO(0xe6800), D_ALL);
 	MMIO_D(_MMIO(0xe6804), D_ALL);
-	MMIO_D(PCH_GMBUS4, D_ALL);
-	MMIO_D(PCH_GMBUS5, D_ALL);
+	MMIO_D(GMBUS4, D_ALL);
+	MMIO_D(GMBUS5, D_ALL);
 
 	MMIO_D(_MMIO(0x902c), D_ALL);
 	MMIO_D(_MMIO(0xec008), D_ALL);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 5e3ba9898f4e..e01e98ff8c30 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7664,13 +7664,6 @@ enum {
 #define   ICP_TC_HPD_LONG_DETECT(tc_port)	(2 << (tc_port) * 4)
 #define   ICP_TC_HPD_SHORT_DETECT(tc_port)	(1 << (tc_port) * 4)
 
-#define PCH_GMBUS0		_MMIO(0xc5100)
-#define PCH_GMBUS1		_MMIO(0xc5104)
-#define PCH_GMBUS2		_MMIO(0xc5108)
-#define PCH_GMBUS3		_MMIO(0xc510c)
-#define PCH_GMBUS4		_MMIO(0xc5110)
-#define PCH_GMBUS5		_MMIO(0xc5120)
-
 #define _PCH_DPLL_A              0xc6014
 #define _PCH_DPLL_B              0xc6018
 #define PCH_DPLL(pll) _MMIO((pll) == 0 ? _PCH_DPLL_A : _PCH_DPLL_B)
